FLT INSTRUCTOR IN AN SMA SEL GIVES A SIMULATED ENG FAILURE TO A STUDENT PLT DURING TKOF ROLL RESULTING IN THE COMPLETE ENG STOPPAGE. EVEN THOUGH THE ACFT BECAME AIRBORNE A FEW FT; IT WAS STOPPED SAFELY ON THE RWY AND THEN PUSHED OFF ON TO THE SIDE.

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THIS WAS TO BE THE LAST DUAL INSTRUCTIONAL FLT FOR MY PRIMARY STUDENT PRIOR TO HIS PVT CHKRIDE AND WE WERE PRACTICING SOME MANEUVERS. HOWEVER; WE HAD EXPERIENCED DIFFICULTY STARTING THE ACFT FOR OUR INITIAL DEP FROM 3I7 TO VES. CONSULTATION WITH THE MECH ON DUTY LED US TO BELIEVE THAT A WEAK BATTERY WAS THE CULPRIT AND HE HAND- PROPPED OUR PLANE. WE EXPECTED THE LOW BATTERY TO BE CHARGING THROUGHOUT THE FLT; AND EVEN WHEN I SAW THE ALTERNATOR GAUGE SHOWING NO MAJOR CHARGE GOING TO THE BATTERY; I DID NOT REALIZE THAT THE BATTERY WAS NOT THE PROB. AT VES; I ELECTED TO SIMULATE AN ENG FAILURE DURING THE TKOF ROLL; NEVER EXPECTING FOR THE AIRPLANE TO BECOME AIRBORNE; AND THE 4500 FT LONG RWY WAS MORE THAN ADEQUATE FOR THE MANEUVER. NEVER BEFORE HAD I SIMULATED AN ENG FAILURE BY PULLING THE MIXTURE; INSTEAD I WOULD RETARD THE THROTTLE TO IDLE. THIS TIME I PULLED THE MIXTURE. THE STUDENT DID BECOME AIRBORNE IN GND EFFECT ABOUT 2 FT AGL; BUT HE HANDLED THE SIT PROPERLY. THEN I PUT THE MIXTURE BACK INTO THE RICH POS WITH THE PROPS STILL WINDMILLING; EXPECTING THE ENG TO FIRE IMMEDIATELY. IT DIDN'T. THE ENG AND PROPS JUST STOPPED. AS I IT TURNED OUT; THE BATTERY WAS NOT THE PROB. IT WAS A BAD STARTER MOTOR. AND NOW THE STARTER WOULD NOT EVEN TURN THE PROP. NEITHER OF US HAD ANY EXPERIENCE HAND-PROPPING; SO WE PUSHED THE ACFT OUT OF THE WAY ONTO (OR RATHER ADJACENT TO) THE PARALLEL TXWY AND I ISSUED A NOTAM CONCERNING THE ACFT AND ITS PARKED LOCATION AT VES. PULLING THE MIXTURE WAS NOT A GOOD IDEA AND I WILL NOT DO THAT AGAIN. HOWEVER; ONCE THE ENG HAD QUIT; I'M GLAD WE HAD THE RESOLVE NOT TO TRY HAND- PROPPING IN AN EFFORT TO GET HOME. IT'S A LOT BETTER TO ENDURE SOME INCONVENIENCE THAN TO LOSE AN ARM TRYING TO HAND-PROP AN AIRPLANE FOR THE FIRST TIME IN THE DARK.